Metal coated long period fiber gratings (LPFG) can be used to change the resonance wavelength.
金属包层长周期光纤光栅可用于对谐振波长的调谐。
Based on the coupled-mode theory, the transfer-matrix method is used to calculate the transmission spectra of phase-shifted long-period fiber gratings (LPFG).
应用耦合模理论和传输矩阵法计算模拟了长周期光纤光栅的透射谱，并对其进行了切趾优化。
Bragg fibers are a kind of fiber formed by multilayer concentric cylinders with period index distribution in the radial.
布拉格光纤是由在径向折射率呈周期分布的多层介质圆环构成的一种光纤。
The transmission spectrum of a novel long period fiber grating written with the high frequency CO2 laser pulses is theoretical analyzed.
对采用高频CO2激光脉冲写入的新型长周期光纤光栅的透射谱进行了理论分析。
The progress in fabrication method of long period fiber grating (LPFG) is introduced.
介绍了长周期光纤光栅制作技术上的进展。
An edge filter demodulation of fiber Bragg grating (FBG) displacement measuring scheme using long period grating (LPG) is reported and demonstrated.
利用长周期光栅的边缘滤波解调技术，我们报道了一种光纤布喇格光栅位移传感方法。
A kind of fiber voltage sensing system based on long period fiber grating is designed.
设计了一种基于长周期光纤光栅的电压传感系统。
As the refractive index of the overlay is higher than that of the cladding, the Long Period fiber Grating (LPG) element exhibits high sensitivity.
对于涂覆长周期光纤光栅(LPG)传感元件，涂覆层折射率大于包层折射率时将具有很高的灵敏度。
Different flowering dates and bolling positions had a significant effect on the individual boll weight, boll period and fiber quality of cotton.
棉花的不同开花期和结铃部位对铃重、铃期和纤维品质有显著影响。
Long period fiber grating (LPFG) is a new kind of optical fiber element.
长周期光纤光栅是一种新型光纤器件。
A method to analyze the resonant wavelength and damping decrement of the transmission spectrum of long period fiber grating (LPFG) with bending curvature was reported.
报道了一种分析长周期光纤光栅(LPFG)透射谱谐振波长和衰减率随弯曲曲率变化的方法。
Long period fiber grating (LPG) is designed as the filter component of edge linear filtering demodulation system for fiber Bragg grating (FBG) temperature sensor.
长周期光纤光栅是特定波长范围内的线性滤波器件，该文设计了长周期光纤光栅解调的布拉格光纤光栅温度传感系统。
Finally, the PDS fiber was an ideal fiber for medical chest repair mesh due to its long absorbable period and good toughness.
最后证明了PDS纤维韧性好，抗冲击性强和降解时间长，是理想的胸外科修补材料。
The fiber structure and quality of the ramie with different growth period were researched.
在不同生长期收割苎麻，然后分别对其纤维结构及品质进行了研究。
The chlorophyll and soluble sugar content of green asparagus and pea seedlings declined during storage period, and the contents of free amino acid, fiber, cell wall polysaccharides, lignin increased.
采后绿芦笋、豌豆苗叶绿素、可溶性糖含量均呈下降趋势，游离氨基酸、粗纤维、细胞壁多糖和木质素含量均呈上升趋势。
The transverse load characteristics of twisted long-period fiber grating (LPFG) written by high-frequency CO2 laser pulses was demonstrated.
研究了高频CO2激光脉冲写入的长周期光纤光栅在扭曲状态下的横向负载特性。
The material is found aramid fibers, the important historical process as a new high fiber into rapid development period.
芳纶的发现是材料界的重要历史进程，芳纶作为一种新兴的高性能纤维进入了飞速发展时期。
The present paper introduce mainly basic principle, device characteristic and making method of long-period fiber grating and outlines the application status in optical communication and sensor system.
介绍长周期光纤光栅基本工作原理、器件特性和制备方法，同时对这种器件在光通信和传感系统中的应用状况作了简要概述。
The acoustooptic interaction in biconical optical fiber was analyzed based on coupled mode theory, and the relationship between perturbation period and flexural wave frequency was discussed.
利用耦合模理论分析了在双锥光纤耦合区中声光的相互作用，讨论了在不同耦合区半径下扰动周期与声波频率的关系。
But the content of the raw fiber increase continuously with the extension in the growth period of the seedling of highland barley until the decline of the rate of juicing.
而粗纤维的含量则随麦苗生长期的延长不断增加，导致出汁率不断降低。
The effects of concentrations of aniline, oxidizing agent, doping agent, and the reaction temperature and period on the conductivity of the composite fiber were discussed.
讨论了氧化剂与苯胺的初始摩尔比、苯胺单体浓度、掺杂酸浓度、反应温度及反应时间对纤维导电性能的影响。
We experimentally obtain the route from period doubling to chaos in an active optical fiber ring resonator (AOFRR) with optical injection.
我们利用外光注入有源光纤环形腔，从实验上获得了从周期走向混沌的路径。
Evanescent-field coupling based on long-period fiber grating (LPG) and bi-conical tapered fiber is proposed and investigated both theoretically and experimentally.
对长周期光纤光栅和双锥形光纤之间的倏逝波耦合作用进行了研究。
The results show that it is suitable to write azopolymer long-period optical fiber gratings using the polarization direct writing method and amplitude mask method.
结果表明：目前比较适合用于偶氮苯聚合物长周期光纤光栅刻写的方法有偏振直写法和振幅掩模法两种。
The spectral characteristics of a long period fiber grating is analyzed by using the coupled mode theory.
本文应用耦合模理论分析了长周期光栅的光谱特性。
Furthermore, the biofilm nitrifying reactor with carbon fiber as carrier operates steadily during the operating period (nitrification rate approaches to 100%).
此外，以碳纤维为填料的生物膜硝化池在整个运行过程中效果很稳定（硝化率趋于100%）。
Easy for maintenance and drying, uneasy for crackling, shorten the construction period, can add the heat-resistant steel fiber according to requirements, and brand change to JC90F, JC90DF and JC90DEF.
养护烘烤简单，不易爆裂，工期缩短，按用户要求可加入耐热钢纤维，牌号更改为JC90F、JC 90 DF、JC 90def。
Recently, mechanically induced micro-bending long-period fiber grating (MBLPFG), have drawn lots of interests, because it has advantages of being reconfigurable, easy to adjust and low cost.
机械微弯长周期光纤光栅除了上述优点外还具有可重构、易调节、成本低等优点，成为近些年的研究热点。
Several kinds of filters used in EDSFS are presented. Their advantages and disadvantages are introduced, the fabrication of long-period fiber grating filters are proposed briefly.
介绍了应用于掺铒光纤光源的几种滤波器的研究状况，阐述了它们的优缺点，简述了长周期光纤光栅滤波器的设计过程。
The common structures of central tube fiber optic cable are introduced, and several major process issues involved in the cablemanufacturing period are discussed.
介绍了中心管式光缆的常见结构，并对制造过程中的主要工艺控制点进行了探讨。
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